Question Papers of IGNOU MCA-OLD CS09


CS09: Data Communication and Networks
Year: 1999 TEE: june Time 3 Full Marks 75
Note: Question 1 is compulsory. Answer any three from the rest.

Q.1: Consider a half duplex point link using a stop and waiting scheme.

Q.1(i): What is the effect on line utilization of increasing the message size so that fewer messages will be required? Other factors remain constant.: [2]

Q.1(ii): What is the effect on line utilization of increasing the number of frames for a constant message size?: [2]

Q.1(iii: What is the effect on line utilization of increasing frame size?: [2]


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